To use an escape code, simple convert the character's ASCII value to its hexadecimal equivalent, and prefix it with a percent sign (%). Replace the character with this new value (%xx) in the URL. Below are the commonly used escape sequences:

You are certainly not limited to using the escape sequences for reserved characters only. In fact, you can use them to obfusticate your URL. For example, you can get to this node by entering the following URL in your browser: